Locking mechanism of aircraft landing gear and aircraft landing gear

The invention relates to a locking mechanism of an aircraft landing gear and the aircraft landing gear. The locking mechanism of the aircraft landing gear comprises a push-pull connecting rod, a locking device, a driving part, an upper supporting rod and a lower supporting rod. The aircraft landing gear comprises the locking mechanism, an aircraft wheel, a main body structure and an actuator. The upper supporting rod is movably connected with the lower supporting rod, the actuator drives the push-pull connecting rod and the driving component to enable the upper supporting rod and the lower supporting rod to be folded and unfolded, and then folding and unfolding of the aircraft landing gear are completed. According to the locking mechanism of the aircraft landing gear and the aircraft landing gear, linkage locking is conducted through the push-pull connecting rod, the locking device, the driving component, the upper supporting rod, the lower supporting rod and the actuator, retracting and releasing of the airc